// Copyright 2014 Manu Martinez-Almeida.  All rights reserved.
// Use of this source code is governed by a MIT style
// license that can be found in the LICENSE file.

package gin

import (
	"bytes"
	"net/http"
	"testing"

	"github.com/stretchr/testify/assert"
)

// TestPanicInHandler assert that panic has been recovered.
func TestPanicInHandler(t *testing.T) {
	buffer := new(bytes.Buffer)
	router := New()
	router.Use(RecoveryWithWriter(buffer))
	router.GET("/recovery", func(_ *Context) {
		panic("Oupps, Houston, we have a problem")
	})
	// RUN
	w := performRequest(router, "GET", "/recovery")
	// TEST
	assert.Equal(t, http.StatusInternalServerError, w.Code)
	assert.Contains(t, buffer.String(), "panic recovered")
	assert.Contains(t, buffer.String(), "Oupps, Houston, we have a problem")
	assert.Contains(t, buffer.String(), "TestPanicInHandler")
	assert.NotContains(t, buffer.String(), "GET /recovery")

	// Debug mode prints the request
	SetMode(DebugMode)
	// RUN
	w = performRequest(router, "GET", "/recovery")
	// TEST
	assert.Equal(t, http.StatusInternalServerError, w.Code)
	assert.Contains(t, buffer.String(), "GET /recovery")

}

// TestPanicWithAbort assert that panic has been recovered even if context.Abort was used.
func TestPanicWithAbort(t *testing.T) {
	router := New()
	router.Use(RecoveryWithWriter(nil))
	router.GET("/recovery", func(c *Context) {
		c.AbortWithStatus(http.StatusBadRequest)
		panic("Oupps, Houston, we have a problem")
	})
	// RUN
	w := performRequest(router, "GET", "/recovery")
	// TEST
	assert.Equal(t, http.StatusBadRequest, w.Code)
}

func TestSource(t *testing.T) {
	bs := source(nil, 0)
	assert.Equal(t, []byte("???"), bs)

	in := [][]byte{
		[]byte("Hello world."),
		[]byte("Hi, gin.."),
	}
	bs = source(in, 10)
	assert.Equal(t, []byte("???"), bs)

	bs = source(in, 1)
	assert.Equal(t, []byte("Hello world."), bs)
}

func TestFunction(t *testing.T) {
	bs := function(1)
	assert.Equal(t, []byte("???"), bs)
}